2000z28franz

I have a 2000 z28 with a 230/230 114lsa custom cam. Stock 853 heads. Stock 323 gears.
Fast 92 intake and tb. Slp lid 3600 yank converter. Car made 383/342 seems low torque. I ran 12.3 at 111. Some people said my mph was low also. Any suggestions?

HCI2000SS

iTrader: (2)

Your MPH is a bit low, but what makes you think your torque is low compared to your horsepower?

2000z28franz

Hey buddy. Ive seen some people with better numbers with smaller cams..One of my friends has a 02 slp car. Just put full exhaust and made 350/360 on a mustang dyno. Im skeptical tho

G Atsma

Is it possible those guys with smaller cams had better heads and/or higher compression, better exhaust? Just having a smaller cam would not necessarily make them less powerful than you.

2000z28franz

Maybe.. i forogt to put i have full exhaust 1 7/8 tsp headers no cats and magnaflow.. i couldnt take slp loud mouth anymore. Haha so you guys think my numbers arnt bad? I want to go to a couple dyno days at other shops and see what it does.

98CayenneT/A

I don't think the numbers are all that bad but I do think your track numbers are off.

can you post a slip.

2000z28franz

2000z28franz

First time ever at the track did 12 passes. Best pass i revd it to around 2 k and let go nitto nt555r tires

98CayenneT/A

what track and what day. I want to look up the density altitude

HCI2000SS

iTrader: (2)

Here's the thing...dynos vary, so I wouldn't worry about the exact number or torque or any of that. You might make better numbers on another dyno, or better torque, or whatever. The trap speed is a much better indicator of true power. A true 383 rwhp LS1 should trap better than 110. Something else is going on

2000z28franz

April 14th .. new england drag way epping new Hampshire.. what should i be trapping 115?

98CayenneT/A

The D.A that day was Negative 1100 ft.

In that kind of DA you absolutely should be trapping higher than 110 mph.

With that same converter and exhaust only I trapped 111 mph. 12.2@111mph 60' 1.71 DA +200 ft.

2000z28franz

So is it all with the tune or should i be looking into something else.. i feel like taking it to someone else would be betrayal lol

HCI2000SS

iTrader: (2)

Do you know any details on the tune, like timing and AFR?

98CayenneT/A

Also shift points

2000z28franz

I dont know anything else about the tune. It does shift pretty normal. I did tell him i wanted to keep it reliable. Its my sum.er daily. Only issue ive had is it sometimes stalls comming to a stop sign. Or cutting the wheel hard in reverse. Do u guys think i could need bigger injectors or better fuel pump?

HCI2000SS

iTrader: (2)

I'd first start by calling your tuner and asking him details on the tune which should include pump and injectors duty

2000z28franz

Ok ill get back to u thank u

qweedqwag

I made 400 with 243 heads, ls6 intake, 1 7/8 headers 3 inch exhaust I made 400 hp 375 torque.

2000z28franz

Stock cam?